Van an toàn
PRESSURE SAFETY VALVE
WRITTEN BY JERRY RATZLAFF ON 24 JANUARY 2017. POSTED IN VALVE
A pressure safety valve is also known as a pressure relief valve and is used to protect vessels and tanks from overpressure. It is designed to protect critical system components such as pressure vessels, tanks and flange ratings.
ABBREVIATIONS
- PSV – pressure safety valve
- PRV – pressure relief valve
PSV ORIFICE DESIGNATION
The effective discharge area is the area that the fluid passes through when the valve is relieving. It is dependent on various properties of the fluid & process including temperature, relieving pressure, flow rate and compressibility.
| Size (in2) | Size (mm2) | |
|---|---|---|
| D | 0.110 | 70.97 |
| E | 0.196 | 126.5 |
| F | 0.307 | 198.1 |
| G | 0.503 | 324.5 |
| H | 0.785 | 506.5 |
| J | 1.1287 | 830.3 |
| K | 1.838 | 1,186 |
| L | 2.853 | 1,841 |
| M | 3.60 | 2,323 |
| N | 4.34 | 2,800 |
| P | 6.38 | 4,116 |
| Q | 11.05 | 7,129 |
| R | 16.0 | 10,323 |
| T | 26.0 | 16,774 |
